Why cannot I submit some Chinese characters to the database? How to solve

Why cannot I submit some Chinese characters to the database ?? My database uses the mysql database test code. there is a table news in gb2312, and the code is gb2312. The field title type is varchar. now I submit data to the table news, the data I submitted is "submitted", but an error is reported. why cannot I submit some Chinese characters to the database ??
My database uses mysql

The database test code is gb2312 which contains a table news, the code is gb2312, and the field title type is varchar.

Now, when I submit data to the table news, the submitted data is "simplified", but an error is returned. Isn't this simplified Chinese character? Why can't I save it to a database?

Worried ~ Alas ~

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This is obviously a gbk character, big brother.
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If you write an SQL statement and insert it directly, check your database if you cannot write it to the database.
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In this case, the character set is greatly changed!
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UTF-8 is enough.